He liked me in school but now ignores my socials—how do I reconnect?

He liked me in school but now ignores my socials—how do I reconnect?

I was very studious and focused on career. I had pressures in life that I did not pay attention to him. He expressed that he likes me in year 8. I did not bother. I had a lot going on in life and my personal life. Many years after, during a job role I bumped into him and he was reacting and being "distracted". He still feels something because he acts different around me. I am no longer in that job role due to own choice. As we have mutual friends I know he is active on social media and his ex girlfriend reached out to add me, its only after a couple of years of me being more active on social media did I realise that that they were in a former relationship. He talked about me and the guy would support me even without me asking. I want him to come back in my life. I am British Indian and he is British white which I have no problem with. What should I do? He feels something but he is ignoring me.

He liked me in school but now ignores my socials—how do I reconnect?
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